Washing-machine tub



R. J. ANDERSON.

WASHING MACHINE TUB.

APPLICATION FILED AUG-16.1917. 1,389,090, Patented Aug. 30, 1921. I 2 SHEETS-SHEET I.

APPLICATION FILED AUG.I6. 1911.

. Patented Aug. 30, 1921'.

2 SHEETS-SHEET 2.

' 303mm J. nnnnnsolv, or SIDNEY, ogn o.

nesaoeoy WASHING-YMAQHINE Ten.

Specificati on of Letters Patent. Patented Aug. 30, 1921.

Application filed August 16, 1917. ser iai No. 186,622.

To all, wiwmi concern:

Be itknownthat I, RQBERT J. Ammnson, aycitizen of .the UnitedStates, residin at Sidney, in ,the county of Shelby and, tate .o.f;0hio, have invented certain new and useful Improvements in Washing-Machine ubs,oof which theiollowing-is aspecification. I

-*My invention relates to. washing machine tubs, especially of the character of those mounted gfor rockingor ,vibrating movements,,and :it is .the fobject of my invention to provide .a ,tub of novel construction whereby to obtaingreat strength and,durabilit I .l\ yinvention consists in .iorminga tub which issubstantijally elliptical in cross-section in'a planeiperpendiculartoits pivotal axis further, to .so construct a washing machinetub having end-walls, staves and ten sion-bands, :that pressure of the tensionbandsaboutrthe end-walls acts upon the end walls'and upon the portions of the ,staves between the end-walls .to normally press those portions .ofithe ,staves between the end-walls inwardly; further, .to provide novel .means for forming and. connecting the boundarywalls of thetubeopeningi and, furtherjitoprovide' novel arrangement of the interiorflfacesof :the walls ofthe-tub opening and cover therefor.

The invention will: befurther readily understood from/the following description and claim, .and fromkthe drawings, injwhich latter: f

:Figure 15 is a. plan view ,ofaaawashingvmachine :tub -embodyingmy invention. 7

Fig. 2 isa'longitudinal vertical section of a washing] machine tub embodying my invention, .with the-cover removed, and taken in the plane of the line 2-12 of lF-ig. 1.

. Fig. 3 is .a verticalf cross-section of the same,.taken inztheplanemf the line 33 .of

.Fig. 2. I

i Fig. 41. is a detail in. vertical longitudinal section, showing the tub-opening and its cover, andtaken in the planeof the line 2 -2 oflFig. .1.

:Fig. 5 is a cross-sectionof thesame, partly broken away, taken inothe, plane of. the line 3-3. of Fig. 2.

Fig. 6 is a horizontal section taken in the plane of the line 6-6. of-Fig. 2.

Fig.7 isa detail insection, taken'in the plane ofthe line 77 of Fig;- 6; and

Fig. 8 is a detail taken ingthe planeofthe line;8. 8 of Fig. 3.

My improved"wa shing machine tub is preferably elliptical in general form. The body off the tub is shown at 11. 1t isprovided with an opening 12. thr0ugh whichthe contents ofthetubare receivedandrernoved.

.The tub comprisesend-walls 13 and staves 14', 15,the staves 15 being at theopening 12. The end-walls and staves are instanced as of wood, but may,if desired, ;.be of ,other material. The respective end-wallsare substantially ell ptical in outline theelliptical peripheral edge 16 of the end-wall being interrupted by an extension 17 extending upwardly inthe plane of the end-wall.

Th ta es xtend ss iseo th walls,the outer, endsofthe stave'soverhang ing the outer faces of the end walls. The en l an stav se p ov de w t ove lapping jo n s- Th s, h ne if ce Q the staves 141 are provided withgrooves 18 adjacent to; their ends, in which the peripheral e g s th dewa lse c i Th j nt betw enth stavese prefe ab y apping joints, being shown as tongue and groove joints 19, The vstaves 15; preferably form the sideg boundaries or .walls of ,the opening 12 of the tub. {lhey are instanced as provided with longitudinally extending enlargements 20 tothe opening, their inner faces sloping inwardly, asshown bythe inh i sloping f c -2 t di c h m v ng conten s. t. e ubv i w rd yaway from h Qnen sduring peratio 7 Th edge of th are 1151 the en mies T112 slan we ytqwar ea h e h .asshewn by he slanting faces 23, for iorming 1a tapering joint; between ,said. side-walls ofthe opening and therelatively tapering side walls 24 of thecover 25. V i

l Th new n 29 in their peripheral gedges at, the respective ends of the extensions 17, in which the enlargements 20 of thestaves 15 are received. The 'innerslopingtaees 22, of the staves 15 are, adjacent'to their respective ends, provided with ;grooves 31, and 1 the slanting :faces 23 are, adjacentgto their respective e11ds,. pr0videdwith grooves 32, the matingperipheral edges of the walls of the recesses 29 andextension 17 being received respectively in the grooves 31,; 32,.when said end states 15- are in place, forming a lap ping [water-tight joint'at each of the corare provided 7 with recesses outer faces of said staves are preferably fl sh with the outer peripheries of the exftensions 17. Theperipheral' edges of said extensions and the outer peripheral faces of said staves preferably form a continuous ellipse. The respective ends of the staves preferably extend outwardly slightly beyond said end-walls.

In operation, the tub is suitably mounted and operated so as to have a pivotal axis or axis ofv oscillation which is perpendicular to the end-walls of the tub.

The end-walls of the opening 12 are pref-- erably formed by reinforcing strips 36, which are secured to the inner faces of the extension 17 by screws 37. The inner faces of these reinforcing strips are preferably slanting, as shown at 38, coacting with correspondently slanting end-faces 39 of the cover. The ends a0 ofsaid reinforcing strip preferably abut against the inner slanting faces 23 of the side walls of the opening and coact with the same in forming the corner of the tub-opening.

Reinforcing strips 41 are secured to'the outer faces of the extension 17, as by screws 12. The ends 43 of the reinforcing strips 11 preferably abut against the slanting face 23 of the st: ves 15 outside the end-walls, and coact with said slanting face to strengthen the corner of the tub-opening.

The outer peripheral edges of the reinforcing-strips 36 and 41 preferably lie in the plane of the outer periphery of the extension 17. Said reinforcing-strips may be of wood, the grain of the wood extending crosswise of the direction in which the grain of the extension 17 extends. The outer faces of the reinforcing-strips 4L1 areflush with the outer ends of the staves.

The cover is preferably a sheet-metal cover, having the sloping side walls 24: which correspond with the slanting faces 23 and coact therewith, and withthe sloping end-walls 39 corresponding with the slanting inner faces 38 of the end-walls of the opening 12, and coact therewith, the said side walls 24 and end-walls 39 being connected by an inner closing wall 47 and an outer wall 48. The inner edges of the side and end walls of the cover, when the cover is in place, are preferably coincident with he inner edges of the slanting faces 23 and 38, so that contact of the water and contents of the tub with the faces 23 and 38 will be avoided, -thereby preventing seeping or spraying of water between "the cover and the walls of the tub-opening. The cover is also preferably provided with side flanges 50 and end flanges 51, received respectively over the edges of the staves 15 and the reinforcing strips 36. As hereinbefore stated, the inner sloping faces 22 further deflect the contents of the tub away from the vouter faces of the walls of the tub-opening.

It has been found in practice that tubs which are mounted to swing and are formed of staves are very liable to leakage. I have avoided this objection by the manner in which the staves and end-walls are formed and connected, and, furthermore, by providing bands received'about the endfwalls in such manner as to cause pressure upon the staves between the end-walls toward the inner portion of the tub. For this purpose I provide the bands 53, which are preferably slightly flexible sheet-metal bands, one of the bands being provided about each of the end-walls of the tub, and extending inwardly from said end-walls for overhanging the planes of the inner faces of said end-walls and therebyexerting inwardpressure upon the staves between'said end-walls. The said bands extend lengthwise of the end-walls and "of the extensions of said endwalls at the opening of the tub.

A suitable tensioning device is provided for each of the hands. This tensioning de vice is shown-formed by providing the respective ends of the band with checks 54, 55, secured to the ends of the band by rivets 56. A bolt 57 is received through holes 58, 59, in said cheeks and has a nut 60 adjustably received over its threaded end. The middle of the width of the band and the tension-device are substantially in the plane of the inner face of the end-wall of the tub, so that, when tension is exerted on the band, the latter will tend to tilt inwardly at its inner edge for exerting inward pressure upon the portion of the staves between the end-walls, tending to how the staves between ,theend-walls of the tub inwardly for compressing the joints between the staves and aiding in resisting outward pressure.

The outer edges of the bands coincide preferably substantially with the planes of the outer faces of said endswalls. l v The pressures of the bands tend to maintain the joints between'the staves closed and to compensate for the expansion and contraction of the stavesdue to the changes in atmosphere and moisture. The pressures of the bands upon the staves also act to resist the outward thrusts of the contents of the tub upon the staves during operation of the tub. The pair of tension bands, one received about each of the end walls and extensions, at the respective ends .of the tub, are the sole tension bands'employedby applicant, as the presence of additional tension bands between the end tension bands would detrimentally aifect the inward pressures exerted. The inward pressures of the inwardly overhanging edge of the tension band at each end of the tub coact to afford the desired inward pressure throughout the lengths of the staves between the end walls, the pressure of the outer portions of said tension bands being resisted by said end walls and extensions.

The cover is provided with suitable han dles 61. The flanges of the cover are re ceived between the bands 53.

Spiders 62 have arms 63 extending in various directions across'the outer faces of the end-walls of the tub, for reinforcing these end-walls, the'inner faces of said spiders contacting said outer faces. The spiders are secured to the tub by means of screws 6 1;

The spiders are preferably comparatively thin, flat castings of metal which are secured to the end-walls and aid in preventing warping of said end-walls and in imparting strength and durability to the end-walls of the tub.

I do not herein claim the form of the interior surface of the tub, or the manner of pivoting the tub with relation to said in terior form, or the manner of mounting or operating the tub, or a plurality of said tubs, having shown, described and claimed, the same in copendmg applications for pat- I ents filed by me in the United States Patent Oifice as Serial No. 186,623, filed August 16, 1917, and Serial No. 187,598, filed August 22, 1917.

What I claim as new in the present application, desired to secure by Letters Pat- I ent, is:

In a washing machine tub having an opening, the combination of an end wall at each end of said tub,staves received 'about said end walls and comprising an end-stave provided with an inward extension at each side of said opening, said end-staves forming the side walls of said opening, each of said end walls provided with an extension at said opening between said end-staves, each of said end-staves at each end thereof provided with a groove at its inner face presented toward the inner part of said tub and with a groove at the side thereof presented toward said opening, the peripheral edge of said end-wall and the lateral edge 7 of said extension received in said respective grooves at each corner of said opening,;a reinforcing strip at each side of each of said extensions, the end of each of said re inforcing strips at each of said corners abutting against the side of said end-stave at each of the corners of said opening, said reinforcing strips and said edge of said extension at each of said corners forming a Witnesses: a

MARGARET MACFARLANE, J AS. ANDERSON.

ROBERT J. ANDERSGN. V 

